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66484079 = 378321649
BaseRepresentation
bin1111110110011…
…1011101101111
311122002202000022
43331213131233
5114004442304
610332552355
71435051064
oct375473557
9148082008
1066484079
113458a522
121a3226bb
1310a0a3bc
148b88c6b
155c83ebe
hex3f6776f

66484079 has 8 divisors (see below), whose sum is σ = 69106800. Its totient is φ = 63904896.

The previous prime is 66484069. The next prime is 66484087. The reversal of 66484079 is 97048466.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 66484079 - 224 = 49706863 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66484009) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7754 + ... + 13895.

It is an arithmetic number, because the mean of its divisors is an integer number (8638350).

Almost surely, 266484079 is an apocalyptic number.

66484079 is a deficient number, since it is larger than the sum of its proper divisors (2622721).

66484079 is a wasteful number, since it uses less digits than its factorization.

66484079 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21769.

The product of its (nonzero) digits is 290304, while the sum is 44.

The square root of 66484079 is about 8153.7769775730. The cubic root of 66484079 is about 405.1096162162.

The spelling of 66484079 in words is "sixty-six million, four hundred eighty-four thousand, seventy-nine".

Divisors: 1 37 83 3071 21649 801013 1796867 66484079